| 应用于无线传感器网络低噪声放大器的设计 |
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| 引用本文： | 尹玉军,李智群.应用于无线传感器网络低噪声放大器的设计[J].中国集成电路,2009,18(4):68-71,82. |
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| 作者姓名： | 尹玉军 李智群 |
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| 作者单位： | 1. 东南大学射频与光电集成电路研究所,南京,210096;东南大学集成电路学院,南京,210096
2. 东南大学射频与光电集成电路研究所,南京,210096 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 本文给出一种应用于无线传感器网络射频前端低噪声放大器的设计，采用SMIC0．18μmCMOS工艺模型。在CadenceSpectre仿真环境下的仿真结果表明：该低噪声放大器满足射频前端的系统要求，在2．45GHz的中心频率下增益可调，高增益时，噪声系数为2．9dB，输入P1dB压缩点为-19．8dBm，增益为20．5dB；中增益时，噪声系数为3．6dB，输入P1dB压缩点为-15．8dBm，增益为12．5dB；低增益时，噪声系数为6．0dB，输入P1dB压缩点为-16．4dB，增益为2．2dB。电路的输入输出匹配良好，在电源电压1．8V条件下，工作电流约为6mA。
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| 关 键 词： | 无线传感器网络 低噪声放大器 射频集成电路 射频前端 |
Design of Low Noise Amplifier for Wireless Sensor Network |
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| YIN Yu-jun,LI Zhi-qun.Design of Low Noise Amplifier for Wireless Sensor Network[J].China Integrated Circuit,2009,18(4):68-71,82. |
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| Authors: | YIN Yu-jun LI Zhi-qun |
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| Affiliation: | 1.Institute of RF-&OE-ICs;Southeast University;Nanjing;210096;China;2.School of Integrated Circuits;China |
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| Abstract: | A low noise amplifier designed for Wireless Sensor Network （ WSN ） RF front-end is proposed. It is designed in SMIC 0.18 μ m CMOS process. It has been simulated and verified with Cadence Spectre. According to the result of simulation, the low noise amplifier fulfills the demand of the RF front-end system. The amplifier works well centered at 2.45GHz frequensy and the forward gain ig variable. NF （ Noise Figure ） of 6.0dB, input PldB of -19. 8dBm, gain of 20.5dB at high gain, NF of 3.6dB, input PldB of -15.SdBm, gain of 12.5dB at middle gain and NF of 2.9dB, input PldB of -16.4dBm, gain of 2.2dB at low gain are achieved. The circuit achieves good impedance matching both at input and output whilc consuming about 6mA current from a 1.8 V power supply. |
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| Keywords: | WSN LNA RFIC RF front-end |
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